Today i solved very quiet audio-video output to hifi speakres. After replace file in system/vendor/etc with this file mixer_paths.xml (32.1 KB) is sound more clear and loud in android. Some solution we need in CE for this box of setting default volume for audio-video output according to 85H set https://forum.xda-developers.com/apps/magisk/mod-increase-default-volume-to-want-t3723793. @TheCoolest please change it settings of volume for AV output in dtb for this device.